The bottom line, really, is the Terms and Conditions that many of us signed up for have been degraded since around 2009. That includes rostering, leave allocation, remuneration, housing, staff travel, et al. There have been little or no improvements (yes, I know, a bit of increase in the utilities allowance) in the overall package. But again, the big one is the rostering, with the type of flying the majority of the pilots do here. Things like factoring, (no flight credit for augmenting crews not in operating seat), ULRs with only three crew with published expectation to go to 22 hrs in irregular ops, just to name two. The fact that if the bid computer gives you over five off days in a row, there will a "reserve day" (AD-available day) manually inserted in the middle of the days off. Do I need to go on?
Not so much "unhappy", just more of a frustration and being fed up. It's a one way street here and not in the pilots' direction.